THE BRIEF HISTORY OF 8085 MICROPROCESSOR

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THE BRIEF HISTORY OF 8085 MICROPROCESSOR
THEIR APPLICATIONS

• PRESENTED BY
• Prof. U V THETE
• Dept. of Computer Science
• YMA

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WHAT IS MICROPROCESSOR ?

• The Microprocessor is a Programmable device.
• It has computing decision making capabilities.
  

Fig- Microprocessor Chip
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HOW DOES THE MICROPROCESSOR WORK ?

• The Microprocessor reads BINARY instructions from
  a storage device, called MEMORY.
• It accepts binary data as input and processes
  data according to the instructions.

Fig-BASIC MICROPROCESSOR BASED SYSTEM
ARCHITECTURE
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TYPES OF MICROPROCESSOR

• CISC (Complex Instruction Set Computer)
• RISC (Reduced Instruction Set Computer)
• VLIW (Very Long Instruction Word Computers )
• SUPER SCALAR PROCESSOR

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CISC AND RISC TECHNOLOGY

• RISC stands for reduced instruction set computer
  and CISC - for complex instruction set computer.
• RISC chips use simpler instructions sets to
  achieve higher clock frequencies and process more
  instructions per clock cycle than CISC
  processors.
• CISC chips have a large amount of different and
  complex instructions. Reason is hardware is
  always faster than software so, have a powerful
  instruction set, which provides programmers with
  assembly instructions to do a lot with short
  Programs.
• CISC chips are relatively slow (compared to RISC
  chips) per instruction, but use little (less than
  RISC) instructions.
• Intel and AMD, for example, develop CISC
  processors (x86), while Apple and SUN use RISC
  architecture.

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CISC AND RISC TECHNOLOGY

• RISC is cheaper and. RISC puts a greater burden
  on the software. Software needs to become more
  complex. Software developers need to write more
  lines for the same tasks. So, RISC is not the
  architecture of the future.
• CISC chips are becoming faster and cheaper
  anyway.
• Pentium is definitely CISC

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4 BIT MICROPROCESSORS

• Worlds FIRST Microprocessor is INTEL 4004.
• It is a 4 bit microprocessor based on LSI
  Technology.
• APPLICATION-
• Video games, Microwave ovens, Calculators.
• DRAWBACKS-
• Slow, Small Memory Size.

Fig- INTEL 4004
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8 BIT MICROPROCESSORS

• In 1972,8-bit microprocessor Intel 8008 had been
  launched.
• It can address 16KB memory.
• In 1974, Intel 8080 came with 10 times higher
  speed.
• Addresses 64KB memory.
• APPLICATION-
• Calculator, Traffic Signal Control, Altair 8800
  Computer (First PC).

Fig- INTEL 8008
Fig- INTEL 8080
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Z- 80 MICROPROCESSOR

• Z-80 microprocessor is manufactured by Zilog
  Corporation on July,1976.
• It has 16bit Address Bus 8bit Data Bus.
• Required less hardware for power supply.

Fig- Zilog Z-80
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APPLICATIONS OF Z-80
Fig-Z80 CPU formed on Glass Substrate
Fig- Programming Graphing Calculator
Fig- WRIST COMPUTER
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BASIC FEATURES OF 8085

• 8085 is a 8-bit microprocessor.
• It is capable of addressing 64KB of memory.
• It has 40 pins requires 5V of power supply.
• Required Clock frequency is 3MHz.

Fig- Intel 8085
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DEMULTIPLEXING OF AD7-AD0

A15-A8
HIGHER ORDER ADDRESS BUS
ALE
AD7-AD0
LOWER ORDER ADDRESS BUS
Latch
A7- A0
8085
D7- D0
DATA BUS
Fig- Demultiplexing of Address/ Data Lines
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APPLICATIONS OF 8085

• WordStar
• Automatic Water Level Controller
• Automatic Plant Irrigator
• Traffic Control System

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WHERE WE STAND NOW ?
Itanium, Pentium Dual Core, Core i3, i5, i7
Intel 80386, 80486, Pentium P5, P6,Pentium 4
Intel 8086, 8088, 80186, 80286
64-BIT MP
Intel 8008, 8080, 8085, Z-80
32-BIT MP
16-BIT MP
Intel 4004
8-BIT MP
4-BIT MP
Latest Version of Intel Microprocessor Core i7.
Introduced on 16 March,2010
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Dual-Core
A dual-core processor is a CPU with two
processors or "execution cores" in the same
integrated circuit. Each processor has its own
cache and controller, which enables it to
function as efficiently as a single processor.
they can perform operations up to twice as fast
as a single processor can.
The Intel Core Duo, the AMD X2, and the dual-core
PowerPC G5 are all examples of CPUs that use
dual-core technologies.
a dual-core system has twice the processing power
of a single-processor machine,
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Intel Core i3 Processor
Uses 4 threads. it uses hyperthreading
technology with its improved efficiency over
earlier processors. This processor consists of
2-4 cores Contains A 3-4 MB Cache Uses less heat
and energy than earlier processors.
Intel Core i5 Processor
This is the mid-size processor . It is used where
the user will be running resource-intensive
applications. It has 2-4 cores, the main
difference is that it has a higher clock speed
than the Core i3. This is also a heat and energy
efficient processor. it also uses hyperthreading
technology for a boost in performance. The cache
of the Core i5 is bigger than the Core i3, its
at 3-8 MB.
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Intel Core i7 Processor

• The cache on this one is 4-8 MB.
• This processor comes with 8 threads, definitely
  enough to get the job done quickly.And yes it
  also utilizes hyperthreading technology.
• it is more energy efficient and produces less
  heat.

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THE LATEST WONDER
Fig- Worlds First Flexible Organic
Microprocessor
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FUTURE ASCEPTS

• Microprocessors are increasingly playing a major
  role in the modern society. To-day, the
  processors can be seen as a set of several
  sub-processors working for a single program.
  Possibly in the future, the microprocessor chip
  will hold several processors working in parallel
  for several program threads.

Fig- 10th Generation of Itanium chip having 3
billion Transistors
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THANKING YOU